ISO INTERNATIONAL STANDARD 11971 Third edition 2020-01 Steel and iron castings Visual testing of surface quality Pieces moulees en acier ou en fonte- Controle visuel deI'état de surface Referencenumber IS011971:2020(E) so @IS02020 IS011971:2020(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below orIso's memberbody in the countryof the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Fax:+41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2020 - All rights reserved